Automatic machine for cleaning wallboards

ABSTRACT

An automatic machine for cleaning wallboards, such as the wallboards of wall, glass or solar panels. Pluralities of long axial tracks are arranged parallel in an array. Water guide pipes and electric rails are formed on the long axial tracks. The walls of the water guide pipes are provided with a plurality of magnetic valves at intervals. Sliding engine bases are arranged on the long axial tracks. The sliding engine bases are provided with conduction frames corresponding to the electric rails and a long axial magnet body which can open and close cleaning water by magnetic force relative to the magnetic valves. At least two brush supporting bases are provided movably on the corresponding sliding engine bases to close to or leave away from the sliding engine bases by a power extending object. A long axial brush is provided between two nearby brush supporting bases of the sliding engine bases. The setting direction of the long axial brush is vertical to that of the long axial tracks. The long axial brush is driven by a shaking device to brush and wash the wallboards. Protective cover plates are arranged at the outer side of the long axial brush.

FIELD OF THE INVENTION

The present invention relates to an automatic machine that is adaptedfor cleaning wallboards.

BACKGROUND OF THE INVENTION

The cleanness of a building's exterior walls can have great influenceson people's impression of the building as well as the city's appearance.In particular, since a building with glass curtain walls can beseen-through, whether the glass curtain walls are clean or not is veryimportant. A conventional way that is adapted to clean the exteriorwalls or outer surfaces of glass windows of the building is hanging asuspended scaffold down from a top of the building to allow workers onthe suspended scaffold to clean the exterior walls or the glass windowsmanually. However, cleaning the exterior walls or the glass windowsmanually not only consumes manpower and is difficult, but is also verydangerous to the workers on the suspended scaffold.

SUMMARY OF THE INVENTION

The main objective of the present invention is to provide an automaticmachine for cleaning wallboards that saves manpower when cleaning thewallboards.

The automatic machine for cleaning the wallboards has:

two long axial tracks being separated and being parallel to each other;

at least two sliding engine bases respectively mounted slidably on thelong axial tracks, and each sliding engine base driven by a main drivingdevice to slide along a corresponding long axial track;

at least two brush supporting bases respectively mounted movably on theat least two sliding engine bases, and each brush supporting base drivenby a power extending object and selectively moving toward or away from acorresponding sliding engine base; and

at least one long axial brush rotatably mounted around at least oneelongated rod and being perpendicular to the long axial tracks, and eachof the at least one long axial brush mounted between and sliding alongwith two of the at least two brush supporting bases that are disposednext to each other and having

an elongated tube having multiple bristles; and

at least one vibrator mounted in the long axial brush.

In the above-mentioned automatic machine for cleaning wallboards, the atleast one long axial brush and the at least one elongated rod freelyrotate relative to each other.

In the above-mentioned automatic machine for cleaning wallboards, atleast two springs are mounted around the at least one elongated rod andare respectively disposed beside ends of the at least one long axialbrush.

In the above-mentioned automatic machine for cleaning wallboards, the atleast two brush supporting bases are pivotally mounted on the at leasttwo sliding engine bases and are respectively connected to the powerextending objects, and each of the power extending objects has a distalend connected to a corresponding sliding engine base. When the powerextending objects selectively retract, the at least two brush supportingbases pivot forward and backward relative to the at least two slidingengine bases.

The above-mentioned automatic machine for cleaning wallboards furtherhas at least one protective cover plate mounted around the at least onelong axial brush. Each of the at least one protective cover plate has apartition disposed in the protective cover plate and having multiplethrough holes separately formed through the partition, and a ventchannel defined between an outer wall of the protective cover plate andthe partition.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has a mounting recess and is securely attachedto the wallboard with at least one T-nut fitted in the mounting recessand attached to the wallboard.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has multiple recessed tracks, and each of thesliding engine bases has multiple wheels slidably mounted in therecessed tracks of the corresponding long axial track.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has an electric rail, and each of the slidingengine bases has a conduction frame corresponding to and electricallyconnected to the electric rail of the corresponding long axial track.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has an elongated water guide pipe and anelongated magnet guiding recess disposed beside and extending parallelto the water guide pipe. Multiple magnetic valves are mounted through aninner wall of each long axial track and correspond to the water guidepipe of each long axial track. A long axial magnet body is mounted inthe magnet guiding recess of each long axial track, slidessimultaneously along with the corresponding sliding engine base andcontrols the magnetic valves that are mounted on the long axial track.

In the above-mentioned automatic machine for cleaning wallboards, eachmagnetic valve has a valve tube, a magnet, a spring, a waterproof gasketand a magnetic plate. The valve tube has a tubular inner space having aclosed end and an open end, multiple grooves axially formed in an innersidewall defined around the tubular inner space, and multiple throughholes radially formed through the valve tube and respectivelycorresponding to and communicating with the grooves. The magnet ismounted in the tubular inner space of the valve tube. The spring ismounted around the magnet and is disposed in the tubular inner space ofthe valve tube. The waterproof gasket and the magnetic plate are mountedon the open end of the tubular inner space of the valve tube insequence. The waterproof gasket has a through hole. The magnetic platehas a through hole. The spring constantly pushes the magnet toward thewaterproof gasket, such that the magnet resiliently abuts the waterproofgasket and selectively seals the through hole of the waterproof gasket.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has an elongated rack, and the main drivingdevice of each of the sliding engine bases has a driving rod and adriving gear securely mounted on the driving rod and engaging theelongated rack of the corresponding long axial track.

In the above-mentioned automatic machine for cleaning wallboards, twoauxiliary driving devices are respectively disposed beside two ends ofeach long axial track, and each auxiliary driving device has a rollerand a pulling element connected to the roller and the sliding enginebase that corresponds to the long axial track.

In the above-mentioned automatic machine for cleaning wallboards, twopivot shafts are rotatably disposed respectively beside the two ends ofeach long axial track and are perpendicular to the long axial track. Therollers are respectively mounted on the pivot shafts. The pullingelement of each auxiliary driving device is connected to the roller andthe sliding engine base that corresponds to the long axial track. Eachpivot shaft is driven by one auxiliary driving device.

The automatic machine for cleaning wallboards has:

at least two long axial tracks being separated and being parallel toeach other;

at least two sliding engine bases respectively mounted slidably on theat least two long axial tracks, and each sliding engine base driven by amain driving device to slide along a corresponding long axial track;

at least one bracket protective cover plate, and each of the at leastone bracket protective cover plate mounted on and between each two ofthe sliding engine bases that are disposed next to each other, beingperpendicular to the at least two long axial tracks and having anelongated sliding track longitudinally mounted on the bracket protectivecover plate;

at least one sliding brush base, and each of the at least one slidingbrush base is driven by a driving apparatus and has a slide disposed onan inner surface of the sliding brush base and slidably mounted on theelongated sliding track of a corresponding bracket protective coverplate; and

at least one brush bracket, each of the at least one brush bracket isslidably mounted on a corresponding sliding brush base and selectivelyslides forward and backward relative to the corresponding sliding brushbase.

In the above-mentioned automatic machine for cleaning wallboards, eachof the at least one brush bracket has a vibrator mounted on the brushbracket.

In the above-mentioned automatic machine for cleaning wallboards, eachof the at least one bracket protective cover plate has a partitiondisposed in the bracket protective cover plate and having multiplethrough holes separately formed through the partition, and a ventchannel defined between an outer wall of the bracket protective coverplate and the partition.

In the above-mentioned automatic machine for cleaning wallboards, eachof the at least two long axial tracks has an elongated water guide pipe.Each of the at least one bracket protective cover plate has a watercollecting receptacle disposed lower than the elongated water guide pipeof the long axial track that corresponds to a top of the bracketprotective cover plate, and a water storage receptacle communicatingwith the water collecting receptacle.

In the above-mentioned automatic machine for cleaning wallboards, eachof the at least two long axial tracks has a mounting recess and issecurely attached to the wallboards with at least one T-nut fitted inthe mounting recess and attached to the wallboard.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has multiple recessed tracks, and each of thesliding engine bases has multiple wheels slidably mounted in therecessed tracks of the corresponding long axial track.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has an electric rail, and each of the slidingengine bases has a conduction frame corresponding to and electricallyconnected to the electric rail of the corresponding long axial track.

In the above-mentioned automatic machine for cleaning wallboards, eachof the long axial tracks has an elongated water guide pipe and anelongated magnet guiding recess disposed beside and extending parallelto the water guide pipe. Multiple magnetic valves are mounted through aninner wall of each long axial track and correspond to the water guidepipe of each long axial track. A long axial magnet body is mounted inthe magnet guiding recess of each long axial track, slidessimultaneously along with the corresponding sliding engine base andcontrols the magnetic valves that are mounted on the long axial track.

In the above-mentioned automatic machine for cleaning wallboards, eachmagnetic valve has a valve tube, a magnet, a spring, a waterproof gasketand a magnetic plate. The valve tube has a tubular inner space having aclosed end and an open end, multiple grooves axially formed in an innersidewall defined around the tubular inner space, and multiple throughholes radially formed through the valve tube and respectivelycorresponding to and communicating with the grooves. The magnet ismounted in the tubular inner space of the valve tube. The spring ismounted around the magnet and is disposed in the tubular inner space ofthe valve tube. The waterproof gasket and the magnetic plate are mountedon the open end of the tubular inner space of the valve tube insequence. The waterproof gasket has a through hole. The magnetic platehas a through hole. The spring constantly pushes the magnet toward thewaterproof gasket, such that the magnet resiliently abuts the waterproofgasket and selectively seals the through hole of the waterproof gasket.

In the above-mentioned automatic machine for wallboards, each of thelong axial tracks has an elongated rack, and the main driving device ofeach of the sliding engine bases has a driving rod and a driving gearsecurely mounted on the driving rod and engages the elongated rack ofthe corresponding long axial track.

In the above-mentioned automatic machine for cleaning wallboards, twoauxiliary driving devices are respectively disposed beside two ends ofeach long axial track, and each auxiliary driving device has a rollerand a pulling element connected to the roller and the sliding enginebase that corresponds to the long axial track.

In the above-mentioned automatic machine for cleaning wallboards, twopivot shafts are rotatably disposed respectively beside the two ends ofeach long axial track and are perpendicular to the long axial track. Therollers are respectively mounted on the pivot shafts. The pullingelement of each auxiliary driving device is connected to the roller andthe sliding engine base that corresponds to the long axial track. Eachpivot shaft is driven by one auxiliary driving device.

The automatic machine for cleaning wallboards in accordance with thepresent invention has the following advantages. The long axial tracksmay be made of materials with antioxidant properties and are orderlymounted on the wallboards. When the automatic machine is not inoperation, the brush brackets are put aside of the building and thepower extending objects retract the brush brackets. Thus, the brushes ofthe brush brackets are moved off the wallboards and will not be easilydeformed. The bracket protective cover plate protects the brush bracketsand beautifies appearance of the automatic machine.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a first embodiment of an automaticmachine for cleaning wallboards in accordance with the presentinvention, showing a protective cover plate being omitted;

FIG. 2 is an enlarged exploded perspective view of the automatic machinein FIG. 1;

FIG. 3 is an exploded perspective view of a magnetic valve of theautomatic machine in FIG. 1;

FIG. 4 is an end view of an long axial track of the automatic machine inFIG. 1;

FIG. 5 is an enlarged side view of the automatic machine in FIG. 1;

FIG. 6 is an enlarged perspective view of the automatic machine in FIG.1, showing a roller pulling a pulling element;

FIG. 7 is a perspective view of a second embodiment of an automaticmachine for wallboards in accordance with the present invention;

FIG. 8 is an enlarged exploded perspective view of the automatic machinein FIG. 7; and

FIG. 9 is an enlarged side view in partial section of the automaticmachine in FIG. 7.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The following descriptions of the preferred embodiments of the presentinvention are accompanied with the aforementioned attached drawings toexplain the techniques for achieving the objective of the presentinvention.

With reference to FIGS. 1 and 2, a first preferred embodiment of anautomatic machine for cleaning wallboards in accordance with the presentinvention is adapted for cleaning the wallboards 90 having protrusionsand has at least two sliding engine bases 20, at least two brushsupporting bases 50A respectively mounted on the at least two slidingengine bases 20, at least one elongated rod 24A and at least one longaxial brush 40A rotatably mounted around the at least one elongated rod24A. Each of the at least one elongated rod 24A is mounted between twoof the at least two brush supporting bases 50A that are disposed next toeach other. Each of the at least one long axial brush 40A has at leastone vibrator 42A. The at least one vibrator 42A vibrates the long axialbrush 40A so that the long axial brush 40A cleans the wallboards 90.When the automatic machine is cleaning the wallboards 90, the at leastone long axial brush 40A abuts the wallboards 90 and freely rotates.When the at least one long axial brush 40A encounters the protrusions,the at least one long axial brush 40A rolls across the protrusions suchthat the protrusions of the wallboards 90 are easily cleaned.

A specific structure of the first preferred embodiment of the automaticmachine for cleaning wallboards in accordance with the present inventioncomprises multiple magnetic valves 30, at least two long axial tracks10, at least two sliding engine bases 20, at least two brush supportingbases 50A, at least one long axial brush 40A and at least one protectivecover plate 60A.

With further reference to FIG. 3, each magnetic valve 30 has a valvetube 31, a magnet 32, a spring 33, a waterproof gasket 34 and a magneticplate 35. The valve tube 31 has a tubular inner space 311, multiplegrooves 312 and multiple through holes 313. The tubular inner space 311has a closed end, an open end and two different inner diameters. Oneinner diameter of the tubular inner space 311 is defined at the open endof the tubular inner space 311 and is longer than the other innerdiameter of the tubular inner space 311 defined at the closed end of thetubular inner space 311. The grooves 312 are axially formed in an innersidewall defined around the tubular inner space 311. The through holes313 of the valve tube 31 are radially formed through the valve tube 31and respectively correspond to and communicate with the grooves 312. Themagnet 32 undergoes an anti-rust treatment and a hardening treatment, ismounted in the tubular inner space 311 of the valve tube 31 and has tworod portions. The two rod portions have different outer diameters beingrespectively equal to the two different inner diameters of the tubularinner space 311. The spring 33 is mounted around the rod portion with ashorter outer diameter, is disposed in the tubular inner space 311 atthe closed end with a longer inner diameter, and has an inner diameterand two ends. The inner diameter of the spring 33 is equal to theshorter outer diameter of the rod portion. The ends of the spring 33respectively abut the inner sidewall of the valve tube 31 and the magnet32. The waterproof gasket 34 and the magnetic plate 35 are mounted onthe open end of the tubular inner space 311 of the valve tube 31 insequence and are securely attached to the valve tube 31 via screws 36.The waterproof gasket 34 has a through hole 341 formed through a centerof the waterproof gasket 34. The magnetic plate 35 has a through hole351 formed through a center of the magnetic plate 35. The spring 33constantly pushes the magnet 32 toward the waterproof gasket 34, suchthat the magnet 32 resiliently abuts the waterproof gasket 34 andselectively seals the through hole 341 of the waterproof gasket 34.

With reference to FIGS. 2 and 4, each long axial track 10 may be made byan aluminum extrusion process, is substantially rectangular and hasmultiple axial channels, multiple axial recesses, a long axial magnetbody 151, an electric rail 141 and an elongated rack 171. One of theaxial channels is defined as a water guide pipe 11. Three of the axialrecesses are defined as three recessed tracks 12. The three recessedtracks 12 are respectively formed in three elongated outer surfaces ofthe long axial track 10. Moreover, the others of the axial recesses arerespectively defined as a mounting recess 13, a conductive track recess14, a magnet guiding recess 15, a magnetic valve recess 16 and a rackrecess 17. The magnet guiding recess 15 is disposed beside and extendsparallel to the water guide pipe 11. The magnetic valve recess 16 has aninner wall and multiple mounting holes 161. The inner wall of themagnetic valve recess 16 is defined between the magnetic valve recess 16and the water guide pipe 11. The mounting holes 161 of the magneticvalve recess 16 are separately formed through the inner wall of themagnetic valve recess 16. The magnetic valves 30 are respectivelymounted through the mounting holes 161 of the magnetic valve recess 16.The valve tube 31 of each magnetic valve 30 has multiple fastening holes314 and is securely attached to a sidewall defined around the magneticvalve recess 16 via multiple screws mounted through the fastening holes314 of the valve tube 31 and fastened to the sidewall of the magneticvalve recess 16. The long axial magnet body 151 is mounted in the magnetguiding recess 15. The electric rail 141 is mounted in the conductivetrack recess 14 and has an end electrically connected to a power source.The elongated rack 171 is mounted in the rack recess 17 and has abottom, a top and multiple teeth. A size of the bottom of the elongatedrack 171 corresponds to a size of the rack recess 17. The teeth of theelongated rack 171 are formed on the top of the elongated rack 171 andprotrude out of the rack recess 17.

The at least two sliding engine bases 20 are slidably mounted on the atleast two long axial tracks 10. Each sliding engine base 20 has asliding bracket 21, multiple wheels 22 and a main driving device 23. Thesliding bracket 21 corresponds to dimensions of a corresponding longaxial track 10, is mounted around the corresponding long axial track 10and has two ends, multiple mounting holes 211, a conduction frame 213,two mounting wings 214, a mounting seat 215 and a gear hole 216. Themounting holes 211 of the sliding bracket 21 are separately formedthrough the sliding bracket 21, are disposed at the ends of the slidingbracket 21 and correspond to the recessed tracks 12 of the correspondinglong axial track 10. The conduction frame 213 is mounted on an innerwall of the sliding bracket 21, and corresponds to and is electricallyconnected to the electric rail 141. The mounting wings 214 arerespectively formed on the ends of the sliding bracket 21, andcorrespond to and are mounted in the magnet guiding recess 15. Eachmounting wing 214 has a pivot hole 2141. The long axial magnet body 151of the corresponding long axial track 10 is disposed between themounting wings 214. The mounting seat 215 is formed on an outer wall ofthe sliding bracket 21. The gear hole 216 is formed through the slidingbracket 21 and corresponds to the elongated rack 171. The wheels 22 aremounted in the recessed tracks 12 of the corresponding long axial track10 and are rotatably connected to the sliding bracket 21 via multiplescrews 212. The main driving device 23 is mounted on the mounting seat215 and has a driving rod and a driving gear 231. The driving rod isrotatably mounted through the mounting seat 215. The driving gear 231 issecurely mounted on the driving rod, is mounted in the gear hole 216 andengages the elongated rack 171 of the corresponding long axial track 10.Thus, the sliding bracket 21 connecting with the wheels 22 is slidablymounted on the corresponding long axial track 10. The conduction frame213 that is electrically connected to the electric rail 141 provideselectric power to the main driving device 23 to allow the main drivingdevice 23 to drive the sliding engine base 20 to slide along thecorresponding long axial track 10.

The at least two brush supporting bases 50A are respectively mounted onthe at least two sliding engine bases 20. Each of the at least two brushsupporting bases 50A has a mounting tube 51A, two pairs of ears, adriven rod 513A, a pivot base 52A, a pivot rod 53A and a power extendingobject 54A. The mounting tube 51A has an axial hole 511A axially formedthrough the mounting tube 51A. The two pairs of ears oppositely protruderadially from an outer surface of the mounting tube 51A. The ears ofeach pair are respectively disposed adjacent to two ends of the mountingtube 51A. Each ear of one of the two pairs has a pivot hole 512A formedthrough the ear and disposed adjacent to a distal end of the ear. Thedriven rod 513A is rotatably mounted between the ears of the other pairof ears and has a connecting hole 5131A. The pivot base 52A is securelymounted on the sliding bracket 21 via screws and has a pivot hole 521Aaxially formed through the pivot base 52A. The pivot rod 53A ispivotally mounted through the pivot holes 512A of the ears and the pivothole 521A of the pivot base 52A. The power extending object 54A ispivotally mounted on the sliding bracket 21 and has a distal end mountedin the connecting hole 5131A of the driven rod 513A and connected to thedriven rod 513A.

Each of the at least one long axial brush 40A is mounted between two ofthe at least two brush supporting bases 50A that are disposed next toeach other, and has an elongated tube 41A, at least one vibrator 42A andat least two bearings 43A. The elongated tube 41A has multiple bristles411A, an axial hole and at least one vibrator recess 412A. The bristles411A are mounted on an outer surface of the elongated tube 41A. Theaxial hole of the elongated tube 41A is axially formed through theelongated tube 41A. The at least one vibrator recess 412A is formed inan inner surface of the elongated tube 41A. The at least one vibrator42A is mounted in the at least one vibrator recess 412A of the elongatedtube 41A. As shown in the drawings, the elongated tube 41A has onevibrator recess 412A for mounting one vibrator 42A. Each of the at leastone vibrator 42A has an axial hole 421A axially formed through thevibrator 42A and being coaxial with the axial hole of the elongated tube41A. The at least two bearings 43A are securely mounted around the atleast one vibrator 42A. Each two of the at least two bearings 43A aredisposed at two ends of a corresponding vibrator 42A. Thus, the at leastone vibrator 42A is rotatably mounted in the at least one vibratorrecess 412A.

The at least one protective cover plate 60A is U-shaped and elongated,is mounted around the at least one long axial brush 40A, bafflescleaning water and protects the at least one long axial brush 40A. Eachof the at least one protective cover plate 60A has two ends, a partition61A and a vent channel 62A. The ends of the protective cover plate 60Aare respectively connected securely to the sliding brackets 21 of two ofthe at least two sliding engine bases 20 that are disposed next to eachother. The partition 61A is axially disposed in the protective coverplate 60A and has multiple through holes 611A separately formed throughthe partition 61A. The vent channel 62A is defined between an outer wallof the protective cover plate 60A and the partition 61A.

With reference to FIGS. 1, 2 and 5, the first preferred embodiment ofthe automatic machine for cleaning wallboards in accordance with thepresent invention is mounted on the wallboards 90 of a building.Multiple long axial tracks 10 of the automatic machine are parallellymounted on the wallboard 90. Each long axial track 10 is securelyattached to the wallboard 90 with T-nuts 131, fasteners 133 and bolts132 fitted in the mounting recess 13 and attached to the wallboard 90.Multiple water supply pipes respectively communicate with the waterguide pipes 11 of the long axial tracks 10 and supply water from pumpsor tap water pipeline to the long axial tracks 10. At least one slidingengine base 20 is mounted on each long axial track 10. As shown in thedrawings, three long axial tracks 10 are parallelly mounted on thewallboard 90. One sliding engine base 20 is mounted on each long axialtrack 10. One brush supporting base 50A is mounted on each slidingengine base 20. One long axial brush 40A is mounted between each two ofthe brush supporting bases 50A that are disposed next to each other. Theway to assemble the brush supporting bases 50A and the long axial brush40A is as follows. The long axial brushes 40A are coaxial with the axialholes 421A of the vibrators 42A and the axial holes 511A of the mountingtubes 51A of the brush supporting bases 50A. One elongated rod 24A thatmay be a cable, a round steel rod, a tube or the like, is mountedthrough the axial holes 511A of the mounting tubes 51A of the brushsupporting bases 50A and the axial holes 421A of the vibrators 42A.Multiple springs 44A are mounted around the elongated rod 24A and arerespectively disposed beside ends of the long axial brushes 40A. Theelongated rod 24A is strained and is connected to the brush supportingbases 50A. Thus, the long axial brushes 40A are linearly arranged andare perpendicular to the long axial tracks 10. Then, multiple protectivecover plates 60A are respectively mounted around the long axial brushes40A and are respectively attached securely to the sliding engine bases20. The vent channel 62A of each protective cover plate 60A is connectedto a blower 63A. The blower 63A may be mounted on one of the ends of theprotective cover plate 60A and has an outlet communicating with the ventchannel 62A.

With further reference to FIG. 6, two auxiliary driving devices 71 aremounted on the wallboard 90 and are respectively disposed beside twoends of each of the at least one long axial track 10. Each auxiliarydriving device 71 has a pivot shaft 74, at least one roller 711 and atleast one pulling element 72. The at least one roller 711 is securelymounted on the pivot shaft 74. The at least one pulling element 72 ismounted around the at least one long axial track 10. Each of the atleast one pulling element 72 is further mounted around the rollers 711of the two auxiliary driving devices 71 that are disposed beside theends of a corresponding long axial track 10, and has two ends. The endsof the pulling element 72 are connected to the mounting wings 214 of thesliding bracket 21 that is mounted on the corresponding long axial track10. Thus, the pulling element 72 selectively pulls the sliding bracket21 to slide on the long axial track 10. Specifically, as shown in thedrawings, the pivot shafts 74 are mounted through bearing seats 73mounted on the wallboard 90, and are respectively disposed beside thetwo ends of each long axial track 10. Each pivot shaft 74 is driven byone auxiliary driving device 71. The rollers 711 that are mounted oneach pivot shaft 74 respectively correspond to the long axial tracks 10.Multiple pulling elements 72 are respectively mounted around the longaxial tracks 10 and the rollers 711 on the pivot shafts 74. The ends ofeach pulling element 72 are connected to the mounting wings 214 of acorresponding sliding bracket 21. The above-mentioned pulling element 72may be a chain, a belt or as shown in the drawings, a cable connected tothe mounting wings 214 of the corresponding sliding bracket 21 andmounted around the rollers 711 that are disposed beside the ends of thecorresponding long axial track 10. As the rollers 711 alternatelyrotate, the sliding engine base 20 slides along the long axial track 10.

When the first preferred embodiment of the automatic machine forcleaning wallboards in accordance with the present invention is inoperation, the cleaning water flows into the water guide pipes 11 of thelong axial tracks 10. The main driving devices 23 or the auxiliarydriving devices 71 are switched on to drive all of the sliding enginebases 20 to simultaneously slide along the long axial tracks 10. As thepower extending object 54A retracts, the bristles 411A of the at leastone long axial brush 40A abut the wallboard 90. The at least onevibrator 42A vibrates, so the at least one long axial brush 40A vibratesas well. Since the at least one long axial brush 40A is rotatable, theat least one long axial brush 40A rolls across the protrusions of thewallboard 90 with lowered resistance and easily cleans the wallboard 90.The mounting wings 214 of the sliding brackets 21 simultaneously pushthe long axial magnet bodies 151 to slide along the magnet guidingrecesses 15. The long axial magnet bodies 151 and the magnets 32 of themagnetic valves 30 attract each other. Thus, when the sliding enginebases 20 slide by, the magnets 32 are attracted by the long axial magnetbodies 151 and loosen the waterproof gaskets 34 so the through holes 341of the waterproof gaskets 34 are revealed. Consequently, the cleaningwater in the water guide pipes 11 of the long axial tracks 10 is drainedfrom the magnetic valves 30 and flows over the wallboard 90. When thesliding engine bases 20 as well as the long axial magnet bodies 151depart from the magnetic valves 30, the springs 33 of the magneticvalves 30 push the magnets 32 and the magnetic plates 35 of the magneticvalves 30 attract the magnets 32, so the magnets 32 seal the throughholes 341 of the waterproof gaskets 34 to prevent the cleaning water inthe water guide pipes 11 from being drained. Moreover, water drops lefton the wallboard 90 is cleaned away with the sliding engine bases 20sliding across and the bristles 411A of the at least one long axialbrush 40A abutting the wallboards 90 such that the vibrators 42A vibratethe at least one long axial brush 40A. Additionally, after the wallboard90 has been cleaned, the blower 63A may be switched on to guide air withhigh pressure into the vent channel 62A of the at least one protectivecover plate 60A. The air further flows through the through holes 611A ofthe partition 61A to dry the water drops.

In the above-mentioned automatic machine, the long axial tracks 10 maybe made of materials with antioxidant properties and are orderly mountedon the wallboard 90. When the automatic machine is not in operation, theat least one long axial brush 40A is put aside of the building and thepower extending objects 54A protrude and push the brush supporting bases50A. Thus, the bristles 411A of the at least one long axial brush 41Aare moved off the wallboard 90 and will not be easily deformed. The atleast one protective cover plate 60A protects the at least one longaxial brush 40A and beautifies appearance of the automatic machine.

With reference to FIGS. 7 and 8, a second preferred embodiment of anautomatic machine for cleaning wallboards in accordance with the presentinvention is also mounted on the wallboards 90 of the building. Multiplelong axial tracks 10 of the automatic machine are parellelly mounted onthe wallboard 90. At least one sliding engine base 20 is mounted on eachlong axial track 10. Differences between the second preferred embodimentand the first preferred embodiment of the automatic machine are asfollows. A bracket protective cover plate 60B is mounted on and betweeneach two of the sliding engine bases 20B that are disposed on the longaxial tracks 10 and next to each other. A sliding brush base 50B ismounted on each bracket protective cover plate 60B and is capable ofaxial sliding along the bracket protective cover plate 60B. A brushbracket 40B with brush 41B is retractably mounted on each sliding brushbase 50B, selectively abuts the wallboard 90 and has a vibrator 42B.Thus, the second preferred embodiment of the automatic machine may benumerically controlled to wash a partial of the wallboard 90 with thebrushes 41B of the brush brackets 40B. For example, the second preferredembodiment of the automatic machine can selectively wash glass windows91 of the wallboard 90.

A specific structure of the second preferred embodiment of the automaticmachine for cleaning the wallboards in accordance with the presentinvention comprises multiple magnetic valves 30, at least two long axialtracks 10, at least two sliding engine bases 20, at least one bracketprotective cover plate 60B, at least one brush bracket 40B and at leasttwo sliding brush bases 50B. The magnetic valves 30, the at least twolong axial tracks 10 and the at least two sliding engine bases 20 of thesecond preferred embodiment of the automatic machine are the same as themagnetic valves 30, the at least two long axial tracks 10 and the atleast two sliding engine bases 20 of the first preferred embodiment ofthe automatic machine.

With reference to FIG. 8, the at least one bracket protective coverplate 60B is U-shaped and elongated. Each of the at least one bracketprotective cover plate 60B has a partition 61B, an elongated ventchannel 62B, two elongated sliding tracks 64B, a driving apparatus 65B,a transmission roller 66B, a guide roller 67B, a water collectingreceptacle 68B and a water storage receptacle 69B. The partition 61B isdisposed in the bracket protective cover plate 60B and has multiplethrough holes 611B formed through the partition 61B. The vent channel62B is defined between an outer wall of the bracket protective coverplate 60B and the partition 61B. The elongated sliding tracks 64B arerespectively mounted longitudinally on two elongated edges of thebracket protective cover plate 60B. Each elongated sliding track 64B isattached to the bracket protective cover plate 60B via screws 641B. Thedriving apparatus 65B is securely mounted on the partition 61B and isdisposed adjacent to a top of the partition 61B. The transmission roller66B is mounted adjacent to the top of the partition 61B and is connectedto the driving apparatus 65B. The guide roller 67B is mounted adjacentto a bottom of the partition 61B. The water collecting receptacle 68B ismounted on a top of the bracket protective cover plate 60B and isdisposed lower than the long axial track 10 that corresponds to the topof the bracket protective cover plate 60B and the sliding engine base 20that is mounted on the long axial track 10. The water storage receptacle69B is mounted on the top of the bracket protective cover plate 60B, isdisposed below the water collecting receptacle 68B and communicates withthe water collecting receptacle 68B via a guiding tube. A pump (notshown) may be mounted on the water storage receptacle 69B.

Each of the at least one brush bracket 40B is elongated and has a brush41B, multiple pivot seats 43B and a vibrator 42B. The brush 41B ismounted on an outer surface of the brush bracket 40B and is changeable.The pivot seats 43 are separately mounted on an inner surface of thebrush bracket 40B. As shown in the drawing, the brush bracket 40B hastwo pairs of pivot seats 43 respectively disposed adjacent to a top anda bottom of the brush bracket 40B. The vibrator 42B is mounted on thebrush bracket 40B.

Each of the at least two sliding brush bases 50B is a rectangular frame,is capable of being received in the bracket protective cover plate 60B,and has two slides 52B, two fastening seats 51B, a pulling element 53B,multiple pivot seats 54B, multiple connecting rods 55B and a powerextending object 44B. The slides 52B are disposed on an inner surface ofthe sliding brush base 50B, respectively disposed adjacent to twoopposite side edges of the sliding brush base 50B and are respectivelymounted slidably on the elongated sliding tracks 64B of the bracketprotective cover plate 60B. The fastening seats 51B are disposed on theinner surface of the sliding brush base 50B and are respectivelydisposed adjacent to an upper edge and a lower edge of the sliding brushbase 50B. The pulling element 53B may be a chain, a belt or a cable, ismounted around the transmission roller 66B and the guide roller 67B, andhas two ends respectively connected to the fastening seats 51B. Thepivot seats 54B of the sliding brush base 50B are separately mounted onan outer surface of the sliding brush base 50B and respectivelycorrespond to the pivot seats 43B of the brush bracket 40B. Eachconnecting rod 55B is connected to one of the pivot seats 54B of thesliding brush base 50B and one of the pivot seats 43B of the brushbracket 40B that correspond to each other. Thus, the brush bracket 40Bparallelly slides up and down relative to the sliding brush base 50B.The power extending object 44B is pivotally connected to the brushbracket 40B and the sliding brush base 50B and selectively drives thebrush bracket 40B to slide up and down, and forward and backward.

With further reference to FIGS. 7 and 9, the second preferred embodimentof the automatic machine for cleaning wallboards in accordance with thepresent invention is mounted on the wallboards 90 of a building.Multiple long axial tracks 10 of the automatic machine are parallellymounted on the wallboard 90. Means of attaching the long axial tracks 10of the second preferred embodiment are the same as in the firstpreferred embodiment of the automatic machine. Each long axial track 10is securely attached to the wallboard 90 with T-nuts 131, fasteners 133and bolts 132 fitted in the mounting recess 13 and attached to thewallboard 90. Multiple water supply pipes respectively communicate withthe water guide pipes 11 of the long axial tracks 10 and supply waterfrom pumps or tap water pipeline to the long axial tracks 10. At leastone sliding engine base 20 is mounted on each long axial track 10. Asshown in the drawings, three long axial tracks 10 are parallelly mountedon the wallboard 90. One sliding engine base 20 is mounted on each longaxial track 10. One bracket protective cover plate 60B is mountedbetween each two of the sliding engine bases 20 that are disposed nextto each other and is screwed to the sliding brackets 21 of the slidingengine bases 20. Thus, the bracket protective cover plates 60B arelinearly arranged and are perpendicular to the long axial tracks 10. Onesliding brush base 50B and one brush bracket 40B are mounted on eachbracket protective cover plate 60B. The vent channel 62A of eachprotective cover plate 60A is connected to a blower 63A. The blower 63Amay be mounted on one of the ends of the protective cover plate 60A andhas an outlet communicating with the vent channel 62A.

The second preferred embodiment of the automatic machine is controlledby a controlling mechanism. Preferably, the controlling mechanism may bea programmed numerical control to selectively wash a partial of thewallboard 90. Take washing the glass window 91 of the wallboard 90 forexample. Operating processes of the second preferred embodiment of theautomatic machine are input into the programmed numerical control. Atfirst, the main driving devices 23 or the auxiliary driving devices 71are switched on to drive all of the sliding engine bases 20 tosimultaneously slide transversely along the long axial tracks 10 tocorrespond to the glass windows 91. Then, the driving apparatuses 65B ofthe bracket protective cover plates 60B drive the sliding brush bases50B to slide longitudinally to correspond to specific positions of theglass windows 91. When the sliding engine bases 20 and the sliding brushbases 50B correspond to the glass windows 91, the programmed numericalcontrol controls cleaning water from tap water or pumps to flow into thewater guide pipes 11 of the long axial tracks 10. The long axial magnetbodies 151 and the magnets 32 of the magnetic valves 30 attract eachother. Thus, the waterproof gaskets 34 are loosened from the magnets 32of the magnetic valve 30 and the through holes 341 of the waterproofgasket 34 are revealed. Consequently, the cleaning water in the waterguide pipes 11 of the long axial tracks 10 is drained from the magneticvalves 30 when the sliding engine bases 20 slide by.

In the second preferred embodiment of the automatic machine, each of themagnetic valves 30 further has a bent pipe 300B. The bent pipe 300B isconnected to an outlet of the magnetic valve 30, is bending downward andhas an outlet corresponding to the water collecting receptacle 68B ofthe bracket protective cover plate 60B. Therefore, the cleaning waterdrained from the water guide pipe 11 of the long axial track 10 furtherflows into the water collecting receptacle 68B below the magnetic valve30, and flows through the guiding tube to flow into the water storagereceptacle 69B. When the water storage receptacle 69B receives enoughcleaning water, the programmed numerical control activates the powerextending object 44B to drive the brush bracket 40B to slide toward theglass window 91, then activates the pump mounted on the water storagereceptacle 69B to pump the cleaning water to the glass window 91, andactivates the vibrator 42B to vibrate the brush bracket 40B to clean theglass window 91.

At the same time, the main driving devices 23 or the auxiliary drivingdevices 71 drive the sliding engine bases 20 to slide transversely, andthe driving apparatuses 65B drive the sliding brush bases 50B to slidelongitudinally to allow the sliding engine bases 20 and the slidingbrush bases 50B to slide within corresponding glass windows 91 and toclean the corresponding glass windows 91. After the glass windows 91have been cleaned, the blower 63B is switched on to dry the water dropon the glass windows 91. Moreover, the power extending objects 44Bretract the brush brackets 40B and the brush brackets 40B depart fromthe glass windows 91. Then, the sliding engine bases 20, the bracketprotective cover plates 60B, the brush brackets 40B and the slidingbrush bases 50B slide along the long axial tracks 10 to clean otherglass windows 91 or slide back to and are stored at a side of thebuilding.

In the above-mentioned automatic machine, the long axial tracks 10 maybe made of materials with antioxidant properties and are orderly mountedon the wallboard 90. When the automatic machine is not in operation, thebrush brackets 40B are put aside of the building and the power extendingobjects 44B retract the brush brackets 40B. Thus, the brushes 41B of thebrush brackets 40B are moved off the wallboard 90 and will not be easilydeformed. The bracket protective cover plate 60B protects the brushbrackets 40B and beautifies appearance of the automatic machine.

Even though numerous characteristics and advantages of the presentinvention have been set forth in the foregoing description, togetherwith details of the structure and features of the invention, thedisclosure is illustrative only. Changes may be made in the details,especially in matters of shape, size, and arrangement of parts withinthe principles of the invention to the full extent indicated by thebroad general meaning of the terms in which the appended claims areexpressed.

What is claimed is:
 1. An automatic machine for cleaning wallboardscomprising two long axial tracks being separated and being parallel toeach other; at least two sliding engine bases respectively mountedslidably on the long axial tracks, and each sliding engine base drivenby a main driving device to slide along a corresponding long axialtrack; at least two brush supporting bases respectively mounted movablyon the at least two sliding engine bases, and each brush supporting basedriven by a power extending object and selectively moving toward or awayfrom a corresponding sliding engine base; and at least one long axialbrush rotatably mounted around at least one elongated rod and beingperpendicular to the long axial tracks, and each of the at least onelong axial brush mounted between and sliding along with two of the atleast two brush supporting bases that are disposed next to each otherand having an elongated tube having multiple bristles; and at least onevibrator mounted in the long axial brush.
 2. The automatic machine forcleaning wallboards as claimed in claim 1, wherein the at least one longaxial brush and the at least one elongated rod freely rotate relative toeach other.
 3. The automatic machine for cleaning wallboards as claimedin claim 2, wherein at least two springs are mounted around the at leastone elongated rod and are respectively disposed beside ends of the atleast one long axial brush.
 4. The automatic machine for cleaningwallboards as claimed in claim 3, wherein the at least two brushsupporting bases are pivotally mounted on the at least two slidingengine bases and are respectively connected to the power extendingobjects; each of the power extending objects has a distal end connectedto a corresponding sliding engine base; and when the power extendingobjects selectively retract, the at least two brush supporting basespivot forward and backward relative to the at least two sliding enginebases.
 5. The automatic machine for cleaning wallboards as claimed inclaim 4 further comprising at least one protective cover plate mountedaround the at least one long axial brush, and each of the at least oneprotective cover plate having a partition disposed in the protectivecover plate and having multiple through holes separately formed throughthe partition; and a vent channel defined between an outer wall of theprotective cover plate and the partition.
 6. The automatic machine forcleaning wallboards as claimed in claim 5, wherein each of the longaxial tracks has a mounting recess and is securely attached to thewallboard with at least one T-nut fitted in the mounting recess andattached to the wallboard.
 7. The automatic machine for cleaningwallboards as claimed in claim 6, wherein each of the long axial trackshas multiple recessed tracks; and each of the sliding engine bases hasmultiple wheels slidably mounted in the recessed tracks of thecorresponding long axial track.
 8. The automatic machine for cleaningwallboards as claimed in claim 7, wherein each of the long axial trackshas an electric rail; and each of the sliding engine bases has aconduction frame corresponding to and electrically connected to theelectric rail of the corresponding long axial track.
 9. The automaticmachine for cleaning wallboards as claimed in claim 8, wherein each ofthe long axial tracks has an elongated water guide pipe and an elongatedmagnet guiding recess disposed beside and extending parallel to thewater guide pipe; multiple magnetic valves are mounted through an innerwall of each long axial track and correspond to the water guide pipe ofeach long axial track; and a long axial magnet body is mounted in themagnet guiding recess of each long axial track, slides simultaneouslyalong with the corresponding sliding engine base and controls themagnetic valves that are mounted on the long axial track.
 10. Theautomatic machine for cleaning wallboards as claimed in claim 9, whereineach magnetic valve has a valve tube having a tubular inner space havinga closed end and an open end, multiple grooves axially formed in aninner sidewall defined around the tubular inner space, and multiplethrough holes radially formed through the valve tube and respectivelycorresponding to and communicating with the grooves; a magnet mounted inthe tubular inner space of the valve tube; a spring mounted around themagnet and disposed in the tubular inner space of the valve tube; awaterproof gasket and a magnetic plate mounted on the open end of thetubular inner space of the valve tube in sequence, the waterproof gaskethaving a through hole, and the magnetic plate having a through hole;wherein the spring constantly pushes the magnet toward the waterproofgasket, such that the magnet resiliently abuts the waterproof gasket andselectively seals the through hole of the waterproof gasket.
 11. Theautomatic machine for cleaning wallboards as claimed in claim 10,wherein each of the long axial tracks has an elongated rack; and themain driving device of each of the sliding engine bases has a drivingrod and a driving gear securely mounted on the driving rod and engagingthe elongated rack of the corresponding long axial track.
 12. Theautomatic machine for cleaning wallboards as claimed in claim 11,wherein two auxiliary driving devices are respectively disposed besidetwo ends of each long axial track, and each auxiliary driving device hasa roller and a pulling element connected to the roller and the slidingengine base that corresponds to the long axial track.
 13. The automaticmachine for cleaning wallboards as claimed in claim 12, wherein twopivot shafts are rotatably disposed respectively beside the two ends ofeach long axial track and are perpendicular to the long axial track; therollers are respectively mounted on the pivot shafts; the pullingelement of each auxiliary driving device is connected to the roller andthe sliding engine base that corresponds to the long axial track; andeach pivot shaft is driven by one auxiliary driving device.
 14. Anautomatic machine for cleaning wallboards characterized by comprising:at least two long axial tracks being separated and being parallel toeach other; at least two sliding engine bases respectively mountedslidably on the at least two long axial tracks, and each sliding enginebase driven by a main driving device to slide along a corresponding longaxial track; at least one bracket protective cover plate, and each ofthe at least one bracket protective cover plate mounted on and betweeneach two of the sliding engine bases that are disposed next to eachother, being perpendicular to the at least two long axial tracks andhaving an elongated sliding track longitudinally mounted on the bracketprotective cover plate; at least one sliding brush base, and each of theat least one sliding brush base driven by a driving apparatus and havinga slide disposed on an inner surface of the sliding brush base andslidably mounted on the elongated sliding track of a correspondingbracket protective cover plate; and at least one brush bracket, each ofthe at least one brush bracket slidably mounted on a correspondingsliding brush base and selectively sliding forward and backward relativeto the corresponding sliding brush base.
 15. The automatic machine forcleaning wallboards as claimed in claim 14, wherein each of the at leastone brush bracket has a vibrator mounted on the brush bracket.
 16. Theautomatic machine for cleaning wallboards as claimed in claim 15,wherein each of the at least one bracket protective cover plate has apartition disposed in the bracket protective cover plate and havingmultiple through holes separately formed through the partition; and avent channel defined between an outer wall of the bracket protectivecover plate and the partition.
 17. The automatic machine for cleaningwallboards as claimed in claim 16, wherein each of the at least two longaxial tracks has an elongated water guide pipe; and each of the at leastone bracket protective cover plate has a water collecting receptacledisposed lower than the elongated water guide pipe of the long axialtrack that corresponds to a top of the bracket protective cover plate;and a water storage receptacle communicating with the water collectingreceptacle.
 18. The automatic machine for cleaning wallboards as claimedin claim 17, wherein each of the at least two long axial tracks has amounting recess and is securely attached to the wallboard with at leastone T-nut fitted in the mounting recess and attached to the wallboard.19. The automatic machine for cleaning wallboards as claimed in claim18, wherein each of the long axial tracks has multiple recessed tracks;and each of the sliding engine bases has multiple wheels slidablymounted in the recessed tracks of the corresponding long axial track.20. The automatic machine for cleaning wallboards as claimed in claim19, wherein each of the long axial tracks has an electric rail; and eachof the sliding engine bases has a conduction frame corresponding to andelectrically connected to the electric rail of the corresponding longaxial track.
 21. The automatic machine for cleaning wallboards asclaimed in claim 20, wherein each of the long axial tracks has anelongated water guide pipe and an elongated magnet guiding recessdisposed beside and extending parallel to the water guide pipe; multiplemagnetic valves are mounted through an inner wall of each long axialtrack and correspond to the water guide pipe of each long axial track;and a long axial magnet body is mounted in the magnet guiding recess ofeach long axial track, slides simultaneously along with thecorresponding sliding engine base and controls the magnetic valves thatare mounted on the long axial track.
 22. The automatic machine forcleaning wallboards as claimed in claim 21, wherein each magnetic valvehas a valve tube having a tubular inner space having a closed end and anopen end, multiple grooves axially formed in an inner sidewall definedaround the tubular inner space, and multiple through holes radiallyformed through the valve tube and respectively corresponding to andcommunicating with the grooves; a magnet mounted in the tubular innerspace of the valve tube; a spring mounted around the magnet and disposedin the tubular inner space of the valve tube; a waterproof gasket and amagnetic plate mounted on the open end of the tubular inner space of thevalve tube in sequence, the waterproof gasket having a through hole, andthe magnetic plate having a through hole; wherein the spring constantlypushes the magnet toward the waterproof gasket, such that the magnetresiliently abuts the waterproof gasket and selectively seals thethrough hole of the waterproof gasket.
 23. The automatic machine forcleaning wallboards as claimed in claim 22, wherein each of the longaxial tracks has an elongated rack; and the main driving device of eachof the sliding engine bases has a driving rod and a driving gearsecurely mounted on the driving rod and engages the elongated rack ofthe corresponding long axial track.
 24. The automatic machine forcleaning wallboards as claimed in claim 23, wherein two auxiliarydriving devices are respectively disposed beside two ends of each longaxial track, and each auxiliary driving device has a roller and apulling element connected to the roller and the sliding engine base thatcorresponds to the long axial track.
 25. The automatic machine forcleaning wallboards as claimed in claim 24, wherein two pivot shafts arerotatably disposed respectively beside the two ends of each long axialtrack and are perpendicular to the long axial track; the rollers arerespectively mounted on the pivot shafts; the pulling element of eachauxiliary driving device is connected to the roller and the slidingengine base that corresponds to the long axial track; and each pivotshaft is driven by one auxiliary driving device.